Choosing a payment system is one of the most important technical decisions for a business. It affects checkout conversion, payout speed, tax risks, and operational costs. A mistake at this stage can cost thousands of dollars in lost revenue.

Let’s break down three payment acceptance models and the selection criteria.

Three Payment Acceptance Models

1. Payment Gateway

You integrate a payment gateway directly. Money flows from the buyer through the gateway to your bank account. You’re responsible for everything: taxes, refunds, security, payer support.

Stripe and Square are the two biggest names in payment processing. Both were founded in the late 2000s, both became public companies with multi-billion-dollar market caps. But they have fundamentally different philosophies: Stripe is for developers and online business, Square is for retail and offline.

Philosophy and Positioning

Stripe is a platform for the internet economy. Created by developers for developers: clean API, excellent documentation, full programmability. If your business is a website or an app, Stripe gives you maximum flexibility in how the payment process looks and works.

Payoneer is one of the main tools for international settlements for freelancers, marketplaces, and small businesses. If PayPal is a consumer wallet and Wise is for transfers between individuals, Payoneer is purpose-built for professional payouts: freelance platforms, affiliate networks, and advertising platforms.

How Payoneer Works

The concept is simple: you get virtual bank accounts in the US, Europe, UK, Japan, and other countries. Your clients and platforms pay into these accounts via local transfers — fast and without SWIFT. You withdraw money to your real bank account or spend it via the Payoneer card.

Square is an American fintech company that grew from a tiny card reader for iPhone into an ecosystem of hardware, software, and banking services. Today, Square serves millions of small businesses from coffee shops to online stores, offering everything from terminals to lending and checking accounts.

The Square Ecosystem

Square is not just a payment gateway. It’s a full operating system for business:

Offline payments: proprietary POS terminals (Square Reader, Square Terminal, Square Register) accept cards, Apple Pay, Google Pay. Fixed-rate commission with no hidden fees.

Gumroad is a pioneer of the Merchant of Record model for content creators. You upload a digital product, set a price — everything else (payment processing, taxes, VAT, refunds, file delivery) is handled by the platform. No business registration or payment gateway integrations needed.

How Gumroad Works

The model couldn’t be simpler: create a product page, upload files, set a price. Gumroad processes payments, calculates and pays taxes (including VAT for EU), delivers the product to the buyer, and handles refunds. You receive payouts to your bank account or PayPal.